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X-UUID: 8f8a059023584fd5871d139da49238f4-20200930 Received: from mtkcas06.mediatek.inc [(172.21.101.30)] by mailgw02.mediatek.com (envelope-from ) (Cellopoint E-mail Firewall v4.1.14 Build 0819 with TLSv1.2 ECDHE-RSA-AES256-SHA384 256/256) with ESMTP id 1473144545; Wed, 30 Sep 2020 15:08:14 +0800 Received: from mtkcas08.mediatek.inc (172.21.101.126) by mtkmbs08n2.mediatek.inc (172.21.101.56) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Wed, 30 Sep 2020 15:08:05 +0800 Received: from localhost.localdomain (10.17.3.153) by mtkcas08.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Wed, 30 Sep 2020 15:08:06 +0800 From: Yong Wu To: Joerg Roedel , Matthias Brugger , Rob Herring , Robin Murphy , Krzysztof Kozlowski , Will Deacon Subject: [PATCH v3 05/24] dt-bindings: memory: mediatek: Add domain definition Date: Wed, 30 Sep 2020 15:06:28 +0800 Message-ID: <20200930070647.10188-6-yong.wu@mediatek.com> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20200930070647.10188-1-yong.wu@mediatek.com> References: <20200930070647.10188-1-yong.wu@mediatek.com> MIME-Version: 1.0 X-TM-SNTS-SMTP: E7D6746DA1C6BD03377D3E4B8E29DEB562679DA890B32B4FB83C13859582B8F32000:8 X-MTK: N Cc: youlin.pei@mediatek.com, devicetree@vger.kernel.org, Nicolas Boichat , srv_heupstream@mediatek.com, chao.hao@mediatek.com, kernel-team@android.com, linux-kernel@vger.kernel.org, Evan Green , Tomasz Figa , iommu@lists.linux-foundation.org, linux-mediatek@lists.infradead.org, ming-fan.chen@mediatek.com, anan.sun@mediatek.com, Greg Kroah-Hartman , linux-arm-kernel@lists.infradead.org X-BeenThere: iommu@lists.linux-foundation.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Development issues for Linux IOMMU support List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: iommu-bounces@lists.linux-foundation.org Sender: "iommu" In the latest SoC, there are several HW IP require a sepecial iova range, mainly CCU and VPU has this requirement. Take CCU as a example, CCU require its iova locate in the range(0x4000_0000 ~ 0x43ff_ffff). In this patch we add a domain definition for the special port. In the example of CCU, If we preassign CCU port in domain1, then iommu driver will prepare a independent iommu domain of the special iova range for it, then the iova got from dma_alloc_attrs(ccu-dev) will locate in its special range. This is a preparing patch for multi-domain support. Signed-off-by: Yong Wu --- include/dt-bindings/memory/mtk-smi-larb-port.h | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) diff --git a/include/dt-bindings/memory/mtk-smi-larb-port.h b/include/dt-bindings/memory/mtk-smi-larb-port.h index f4d8e3aed0bc..d00f5de8438b 100644 --- a/include/dt-bindings/memory/mtk-smi-larb-port.h +++ b/include/dt-bindings/memory/mtk-smi-larb-port.h @@ -7,9 +7,16 @@ #define __DTS_MTK_IOMMU_PORT_H_ #define MTK_LARB_NR_MAX 32 +#define MTK_M4U_DOM_NR_MAX 8 + +#define MTK_M4U_DOM_ID(domid, larb, port) \ + (((domid) & 0x7) << 16 | (((larb) & 0x1f) << 5) | ((port) & 0x1f)) + +/* The default dom id is 0. */ +#define MTK_M4U_ID(larb, port) MTK_M4U_DOM_ID(0, larb, port) -#define MTK_M4U_ID(larb, port) (((larb) << 5) | (port)) #define MTK_M4U_TO_LARB(id) (((id) >> 5) & 0x1f) #define MTK_M4U_TO_PORT(id) ((id) & 0x1f) +#define MTK_M4U_TO_DOM(id) (((id) >> 16) & 0x7) #endif -- 2.18.0 _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu